5. a) How much lighter than 6.7kg is 5700g? b) How much lighter than 15kg 460g is 15.3kg? c) How many grams must be added to 4kg 210g to make 4.3kg? d) How many grams must be added to 6.9kg to make 7200g? e) How much heavier than 11.1kg is 11kg 345g? f) How much heavier than 24kg 590g is 24.65kg?
Adding and Subtracting Weights
A butcher cut up a large piece of beef into 3 smaller pieces to be sold. They weighed 1890g, 2kg 35g and 3.8kg. What was the total weight of the large piece of meat?
When adding weights, each weight must be written using the same units. Here are the 3 possibilities:
g
1890 2035
+ 3800
kg g 1 2
890 035
+ 3 800 Check to see that the answers are the same. Weight 183 kg